ATXMEGA128B3-AU ATMEL [ATMEL Corporation], ATXMEGA128B3-AU Datasheet - Page 38

• Manufacturer Part Number: ATXMEGA128B3-AU
• Description: 8/16-bit Atmel XMEGA B3 Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

18. AWeX – Advanced Waveform Extension
18.1
18.2
8074B–AVR–02/12
Features
Overview
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The advanced waveform extension (AWeX) provides extra functions to the timer/counter in
waveform generation (WG) modes. It is primarily intended for use with different types of motor
control and other power control applications. It enables low- and high side output with dead-time
insertion and fault protection for disabling and shutting down external drivers. It can also gener-
ate a synchronized bit pattern across the port pins.
Each of the waveform generator outputs from the timer/counter 0 are split into a complimentary
pair of outputs when any AWeX features are enabled. These output pairs go through a dead-
time insertion (DTI) unit that generates the non-inverted low side (LS) and inverted high side
(HS) of the WG output with dead-time insertion between LS and HS switching. The DTI output
will override the normal port value according to the port override setting.
The pattern generation unit can be used to generate a synchronized bit pattern on the port it is
connected to. In addition, the WG output from compare channel A can be distributed to and
override all the port pins. When the pattern generator unit is enabled, the DTI unit is bypassed.
The fault protection unit is connected to the event system, enabling any event to trigger a fault
condition that will disable the AWeX output. The event system ensures predictable and instant
fault reaction, and gives flexibility in the selection of fault triggers.
The AWEX is available for TCC0. The notation of this is AWEXC.
Waveform output with complementary output from each compare channel
Four dead-time insertion (DTI) units
Pattern generation unit creating synchronised bit pattern across the port pins
Event controlled fault protection for instant and predictable fault triggering
– 8-bit resolution
– Separate high and low side dead-time setting
– Double buffered dead time
– Optionally halts timer during dead-time insertion
– Double buffered pattern generation
– Optional distribution of one compare channel output across the port pins
XMEGA B3
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